The HD 38801 system contains 1 exoplanet. It is located 298.22 light years away from the solar system.
| Mass | 1.21 solar masses |
| Radius | 2.03 solar radiae |
| Temperature | 5338 kelvin |
| Stellar Metallicity | 0.25 decimal exponent |
| Age | 6.072 billion years |
At more than 50 Earth masses, HD 38801 b is a gas giant, a planet whose mass is mostly made up of hydrogen and helium, like Jupiter and Saturn.
| Mass | 3082.315 Earth masses |
| Density | 8.670 grams per cubic centimeter |
| Radius | 12.500 Earth radiae |
| Semi-major Axis | 1.623 AU |
| Eccentricity | 0.017 |
| Orbital Period | 685.250 days |
| Discovery Method | Radial Velocity |
| Discovery Facility | Subaru Telescope |
| Discovery Telescope | 8.2 m Subaru Telescope |
| Discovery Instrument | HDS Spectrograph |
| Discovery Date | 2010-05 |
| Reference | Harakawa et al. 2010 |